<template>
  <div class="hig" ref="box-hig" :style="{ height: '100vh' }">
    <el-menu
      default-active="1-4-1"
      class="el-menu-vertical-demo"
      @open="handleOpen"
      @close="handleClose"      
      background-color="#171919"
      text-color="#FFF"
      active-text-color="#2able8"
      :collapse="isCollapse"
      :collapse-transition="false"
      :router="true"
    >
      <el-menu-item>
        <i @click="cheng" class="el-icon-s-operation"></i>
      </el-menu-item>
      <el-submenu index="1">
        <template slot="title">
          <i class="el-icon-location"></i>
          <span slot="title">导航一</span>
        </template>
        <el-menu-item-group>
          <span slot="title">分组一</span>
          <el-menu-item title="文章列表" index="/article">文章列表</el-menu-item>
          <el-menu-item title="文件列表" index="/file">文件列表</el-menu-item>
        </el-menu-item-group>
        <el-menu-item-group title="分组2">
          <el-menu-item index="1-3">选项3</el-menu-item>
        </el-menu-item-group>
        <el-submenu index="1-4">
          <span slot="title">选项4</span>
          <el-menu-item index="1-4-1">选项1</el-menu-item>
        </el-submenu>
      </el-submenu>
      <el-menu-item index="2">
        <i class="el-icon-menu"></i>
        <span slot="title">导航二</span>
      </el-menu-item>
      <el-menu-item index="3" disabled>
        <i class="el-icon-document"></i>
        <span slot="title">导航三</span>
      </el-menu-item>
      <el-menu-item index="4">
        <i class="el-icon-setting"></i>
        <span slot="title">导航四</span>
      </el-menu-item>
    </el-menu>
  </div>
</template>

<script>
export default {
  data() {
    return {
      isCollapse: false,
    };
  },

  methods: {
    cheng() {
      this.isCollapse = !this.isCollapse;
      this.$emit("getCheng", this.isCollapse);
      if (this.isCollapse) {
        this.$refs["box-hig"].style.width = "auto";
      } else {
        this.$refs["box-hig"].style.width = "200px";
      }
    },
    handleOpen(key, keyPath) {
      console.log(key, keyPath);
    },
    handleClose(key, keyPath) {
      console.log(key, keyPath);
    },

  },
};
</script>

<style scoped lang="less">
.hig {
  height: auto;
  .el-menu--collapse {
    width: 49px;
  }
  .el-menu {
    width: 100%;
  }
}
</style>